Extend distcheck for files in Git to all files

Instead of just checking that we distribute all Javascript files, check
that we distribute everything that is in Git.

The toplevel Makefile.am has a variable DIST_EXCLUDE that lists patterns
of files that we actually don't want to distribute.

https://bugzilla.gnome.org/show_bug.cgi?id=595988

Makefile.am

@@ -2,12 +2,21 @@ SUBDIRS = data js src tests po
 
 EXTRA_DIST =		\
 	.project	\
-	.settings
+	.settings	\
+	autogen.sh
+
+# These are files checked into Git that we don't want to distribute
+DIST_EXCLUDE =					\
+	.gitignore				\
+	gnome-shell.doap			\
+	MAINTAINERS				\
+	tools/build/*
 
 distcheck-hook:
-	@echo "Checking disted javascript against files in git"
+	@echo "Checking disted files against files in git"
 	@failed=false; \
-	for f in `cd $(srcdir) && git ls-files js` ; do \
+	exclude=`(for p in $(DIST_EXCLUDE) ; do echo --exclude=$$p ; done)`; \
+	for f in `cd $(srcdir) && git ls-files $$exclude` ; do \
 		if ! test -e $(distdir)/$$f ; then \
 			echo File missing from distribution: $$f ; \
 			failed=true ; \